"And we still have a great deal to do as there are multiple interviews to conduct and evidence to collect and analyze as we reconstruct the timeline of events leading up to Nicole's tragic death," Wilson said.

Eisenhauer was a three-time state champion in track while a high school student in Columbia, Maryland, according to an online biography cited by the Roanoke Times.

He also ran track at Virginia Tech, where he was an engineering student.

Virginia Tech president Tim Sands said addressed the case in a statement posted to the school's website.

"Speaking on behalf of our community, let me say that our hearts go out to Nicole's family and friends," he said. "Lean on that support and the resources available to you. It is normal to feel anxious and overwhelmed at a time such as this. You are not alone."